/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 16:53:19,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 16:53:19,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 16:53:19,829 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 16:53:19,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 16:53:19,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 16:53:19,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 16:53:19,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 16:53:19,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 16:53:19,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 16:53:19,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 16:53:19,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 16:53:19,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 16:53:19,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 16:53:19,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 16:53:19,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 16:53:19,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 16:53:19,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 16:53:19,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 16:53:19,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 16:53:19,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 16:53:19,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 16:53:19,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 16:53:19,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 16:53:19,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 16:53:19,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 16:53:19,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 16:53:19,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 16:53:19,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 16:53:19,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 16:53:19,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 16:53:19,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 16:53:19,889 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 16:53:19,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 16:53:19,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 16:53:19,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 16:53:19,893 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-12-23 16:53:19,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 16:53:19,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 16:53:19,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 16:53:19,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 16:53:19,939 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 16:53:19,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 16:53:19,939 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-23 16:53:19,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 16:53:19,940 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 16:53:19,940 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-23 16:53:19,941 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-23 16:53:19,941 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-23 16:53:19,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 16:53:19,942 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-23 16:53:19,942 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 16:53:19,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 16:53:19,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 16:53:19,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 16:53:19,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:53:19,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 16:53:19,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 16:53:19,943 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 16:53:19,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 16:53:19,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 16:53:19,944 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 16:53:20,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 16:53:20,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 16:53:20,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 16:53:20,384 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 16:53:20,385 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 16:53:20,386 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i [2020-12-23 16:53:20,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8b1da2bd/a23fdacf935b45e5b8cdadee2fcace72/FLAG86c41558d [2020-12-23 16:53:21,112 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 16:53:21,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cstrncpy-alloca-2.i [2020-12-23 16:53:21,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8b1da2bd/a23fdacf935b45e5b8cdadee2fcace72/FLAG86c41558d [2020-12-23 16:53:21,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/d8b1da2bd/a23fdacf935b45e5b8cdadee2fcace72 [2020-12-23 16:53:21,429 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 16:53:21,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 16:53:21,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 16:53:21,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 16:53:21,439 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 16:53:21,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:21,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0a9c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21, skipping insertion in model container [2020-12-23 16:53:21,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:21,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 16:53:21,518 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: address: IdentifierExpression[#t~post7,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length~0,],IntegerLiteral[1]]]]] [2020-12-23 16:53:21,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:53:21,883 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: IdentifierExpression[#t~post3,] left hand side expression in assignment: address: IdentifierExpression[#t~post7,] left hand side expression in assignment: lhs: VariableLHS[~length~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],IdentifierExpression[~i~0,]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~nondetString~0,],base],BinaryExpression[ARITHPLUS,StructAccessExpression[IdentifierExpression[~nondetString~0,],offset],BinaryExpression[ARITHMINUS,IdentifierExpression[~length~0,],IntegerLiteral[1]]]]] [2020-12-23 16:53:21,922 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 16:53:21,995 INFO L208 MainTranslator]: Completed translation [2020-12-23 16:53:21,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21 WrapperNode [2020-12-23 16:53:21,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 16:53:21,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 16:53:21,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 16:53:21,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 16:53:22,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 16:53:22,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 16:53:22,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 16:53:22,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 16:53:22,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... [2020-12-23 16:53:22,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 16:53:22,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 16:53:22,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 16:53:22,167 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 16:53:22,168 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 16:53:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 16:53:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 16:53:22,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 16:53:22,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 16:53:22,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 16:53:22,273 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 16:53:22,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 16:53:22,654 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-23 16:53:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:53:22 BoogieIcfgContainer [2020-12-23 16:53:22,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 16:53:22,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 16:53:22,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 16:53:22,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 16:53:22,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:53:21" (1/3) ... [2020-12-23 16:53:22,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7d08a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:53:22, skipping insertion in model container [2020-12-23 16:53:22,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:53:21" (2/3) ... [2020-12-23 16:53:22,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7d08a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:53:22, skipping insertion in model container [2020-12-23 16:53:22,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:53:22" (3/3) ... [2020-12-23 16:53:22,664 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cstrncpy-alloca-2.i [2020-12-23 16:53:22,671 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 16:53:22,675 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-23 16:53:22,693 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-23 16:53:22,716 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 16:53:22,716 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-23 16:53:22,716 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 16:53:22,716 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 16:53:22,717 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 16:53:22,717 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 16:53:22,717 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 16:53:22,717 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 16:53:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-23 16:53:22,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:53:22,739 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:22,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:22,740 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:22,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029043, now seen corresponding path program 1 times [2020-12-23 16:53:22,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:22,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507432685] [2020-12-23 16:53:22,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:22,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507432685] [2020-12-23 16:53:22,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:22,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 16:53:22,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130484516] [2020-12-23 16:53:22,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 16:53:22,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 16:53:23,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:53:23,005 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-12-23 16:53:23,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:23,057 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-12-23 16:53:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 16:53:23,059 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-23 16:53:23,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:23,068 INFO L225 Difference]: With dead ends: 36 [2020-12-23 16:53:23,068 INFO L226 Difference]: Without dead ends: 34 [2020-12-23 16:53:23,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 16:53:23,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-23 16:53:23,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-12-23 16:53:23,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 16:53:23,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2020-12-23 16:53:23,105 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 7 [2020-12-23 16:53:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:23,106 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2020-12-23 16:53:23,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 16:53:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2020-12-23 16:53:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:53:23,106 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:23,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:23,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 16:53:23,107 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029044, now seen corresponding path program 1 times [2020-12-23 16:53:23,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:23,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518214589] [2020-12-23 16:53:23,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:23,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:23,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518214589] [2020-12-23 16:53:23,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:23,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:53:23,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574067667] [2020-12-23 16:53:23,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:53:23,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:53:23,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:23,210 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand 4 states. [2020-12-23 16:53:23,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:23,248 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-12-23 16:53:23,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:53:23,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:53:23,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:23,249 INFO L225 Difference]: With dead ends: 33 [2020-12-23 16:53:23,250 INFO L226 Difference]: Without dead ends: 33 [2020-12-23 16:53:23,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:23,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-23 16:53:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-12-23 16:53:23,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-23 16:53:23,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2020-12-23 16:53:23,256 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 7 [2020-12-23 16:53:23,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:23,256 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2020-12-23 16:53:23,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:53:23,257 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2020-12-23 16:53:23,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:53:23,257 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:23,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:23,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 16:53:23,258 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:23,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:23,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2020-12-23 16:53:23,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:23,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899718310] [2020-12-23 16:53:23,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:23,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:23,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899718310] [2020-12-23 16:53:23,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:23,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:53:23,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394545443] [2020-12-23 16:53:23,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:53:23,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:53:23,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:23,307 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2020-12-23 16:53:23,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:23,330 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-12-23 16:53:23,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:53:23,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-23 16:53:23,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:23,332 INFO L225 Difference]: With dead ends: 59 [2020-12-23 16:53:23,332 INFO L226 Difference]: Without dead ends: 59 [2020-12-23 16:53:23,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:23,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-23 16:53:23,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 36. [2020-12-23 16:53:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:53:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-12-23 16:53:23,339 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 7 [2020-12-23 16:53:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:23,340 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-12-23 16:53:23,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:53:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-12-23 16:53:23,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-23 16:53:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:23,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:23,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 16:53:23,341 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2020-12-23 16:53:23,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:23,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964837231] [2020-12-23 16:53:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:23,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964837231] [2020-12-23 16:53:23,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:23,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:53:23,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803584142] [2020-12-23 16:53:23,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:53:23,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:53:23,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:23,434 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2020-12-23 16:53:23,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:23,532 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-12-23 16:53:23,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:53:23,533 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-12-23 16:53:23,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:23,534 INFO L225 Difference]: With dead ends: 63 [2020-12-23 16:53:23,534 INFO L226 Difference]: Without dead ends: 63 [2020-12-23 16:53:23,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-12-23 16:53:23,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 38. [2020-12-23 16:53:23,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-23 16:53:23,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-12-23 16:53:23,541 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 7 [2020-12-23 16:53:23,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:23,541 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-12-23 16:53:23,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:53:23,542 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-12-23 16:53:23,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:53:23,542 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:23,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:23,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 16:53:23,543 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:23,544 INFO L82 PathProgramCache]: Analyzing trace with hash -1954751785, now seen corresponding path program 1 times [2020-12-23 16:53:23,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:23,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639030277] [2020-12-23 16:53:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:23,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639030277] [2020-12-23 16:53:23,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:23,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:53:23,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565330060] [2020-12-23 16:53:23,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:53:23,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:53:23,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:53:23,627 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 6 states. [2020-12-23 16:53:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:23,751 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2020-12-23 16:53:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:53:23,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:53:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:23,753 INFO L225 Difference]: With dead ends: 39 [2020-12-23 16:53:23,753 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 16:53:23,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:53:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 16:53:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-23 16:53:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-23 16:53:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2020-12-23 16:53:23,758 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 11 [2020-12-23 16:53:23,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:23,758 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2020-12-23 16:53:23,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:53:23,759 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2020-12-23 16:53:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:53:23,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:23,759 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:23,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 16:53:23,760 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:23,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:23,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1954751784, now seen corresponding path program 1 times [2020-12-23 16:53:23,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:23,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864473681] [2020-12-23 16:53:23,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:23,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:23,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864473681] [2020-12-23 16:53:23,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:23,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-23 16:53:23,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685718136] [2020-12-23 16:53:23,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-23 16:53:23,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:23,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-23 16:53:23,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-23 16:53:23,872 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2020-12-23 16:53:24,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:24,000 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-12-23 16:53:24,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:53:24,001 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-23 16:53:24,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:24,001 INFO L225 Difference]: With dead ends: 43 [2020-12-23 16:53:24,002 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 16:53:24,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-12-23 16:53:24,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 16:53:24,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-12-23 16:53:24,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 16:53:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-12-23 16:53:24,007 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 11 [2020-12-23 16:53:24,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:24,007 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-12-23 16:53:24,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-23 16:53:24,007 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-12-23 16:53:24,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 16:53:24,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:24,008 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:24,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 16:53:24,009 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:24,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1226025170, now seen corresponding path program 1 times [2020-12-23 16:53:24,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:24,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843868840] [2020-12-23 16:53:24,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:24,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843868840] [2020-12-23 16:53:24,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961582313] [2020-12-23 16:53:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:24,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-23 16:53:24,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:24,219 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:24,220 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:53:24,226 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:24,246 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:53:24,250 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:24,250 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:53:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:24,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:24,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-23 16:53:24,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730660743] [2020-12-23 16:53:24,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-23 16:53:24,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:24,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-23 16:53:24,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:53:24,301 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 6 states. [2020-12-23 16:53:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:24,391 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2020-12-23 16:53:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:53:24,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-23 16:53:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:24,393 INFO L225 Difference]: With dead ends: 64 [2020-12-23 16:53:24,393 INFO L226 Difference]: Without dead ends: 64 [2020-12-23 16:53:24,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:24,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-23 16:53:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 36. [2020-12-23 16:53:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:53:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-12-23 16:53:24,398 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 11 [2020-12-23 16:53:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:24,398 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-12-23 16:53:24,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-23 16:53:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-12-23 16:53:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:53:24,399 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:24,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:24,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-23 16:53:24,613 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:24,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:24,614 INFO L82 PathProgramCache]: Analyzing trace with hash -466410634, now seen corresponding path program 1 times [2020-12-23 16:53:24,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:24,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187207861] [2020-12-23 16:53:24,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:24,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187207861] [2020-12-23 16:53:24,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:24,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:53:24,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535507189] [2020-12-23 16:53:24,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:53:24,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:24,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:53:24,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:24,697 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2020-12-23 16:53:24,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:24,731 INFO L93 Difference]: Finished difference Result 73 states and 84 transitions. [2020-12-23 16:53:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:53:24,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-23 16:53:24,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:24,733 INFO L225 Difference]: With dead ends: 73 [2020-12-23 16:53:24,733 INFO L226 Difference]: Without dead ends: 73 [2020-12-23 16:53:24,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:24,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-23 16:53:24,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2020-12-23 16:53:24,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 16:53:24,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-12-23 16:53:24,739 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 12 [2020-12-23 16:53:24,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:24,739 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-12-23 16:53:24,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:53:24,740 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-12-23 16:53:24,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:53:24,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:24,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:24,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 16:53:24,741 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:24,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -467763174, now seen corresponding path program 1 times [2020-12-23 16:53:24,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:24,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029633854] [2020-12-23 16:53:24,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:24,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:24,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029633854] [2020-12-23 16:53:24,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:24,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 16:53:24,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711111072] [2020-12-23 16:53:24,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:53:24,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:24,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:53:24,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:24,869 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 7 states. [2020-12-23 16:53:24,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:24,973 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-12-23 16:53:24,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:53:24,973 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-23 16:53:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:24,974 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:53:24,974 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 16:53:24,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:53:24,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 16:53:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-12-23 16:53:24,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-23 16:53:24,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-12-23 16:53:24,980 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 12 [2020-12-23 16:53:24,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:24,980 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-12-23 16:53:24,980 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:53:24,980 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-12-23 16:53:24,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:53:24,981 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:24,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:24,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 16:53:24,982 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:24,982 INFO L82 PathProgramCache]: Analyzing trace with hash -467763173, now seen corresponding path program 1 times [2020-12-23 16:53:24,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:24,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464731623] [2020-12-23 16:53:24,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:25,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464731623] [2020-12-23 16:53:25,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:25,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-23 16:53:25,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550180006] [2020-12-23 16:53:25,059 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-23 16:53:25,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-23 16:53:25,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:25,060 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 7 states. [2020-12-23 16:53:25,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:25,176 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-12-23 16:53:25,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-23 16:53:25,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-23 16:53:25,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:25,177 INFO L225 Difference]: With dead ends: 47 [2020-12-23 16:53:25,177 INFO L226 Difference]: Without dead ends: 47 [2020-12-23 16:53:25,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:53:25,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-23 16:53:25,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2020-12-23 16:53:25,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 16:53:25,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-12-23 16:53:25,181 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 12 [2020-12-23 16:53:25,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:25,181 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-12-23 16:53:25,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-23 16:53:25,181 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-12-23 16:53:25,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 16:53:25,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:25,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:25,182 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 16:53:25,183 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:25,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:25,183 INFO L82 PathProgramCache]: Analyzing trace with hash 213647736, now seen corresponding path program 1 times [2020-12-23 16:53:25,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:25,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389815641] [2020-12-23 16:53:25,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:25,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:25,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:25,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389815641] [2020-12-23 16:53:25,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:25,247 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:53:25,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530234629] [2020-12-23 16:53:25,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:53:25,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:25,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:53:25,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:25,248 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 5 states. [2020-12-23 16:53:25,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:25,280 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-12-23 16:53:25,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:53:25,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-23 16:53:25,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:25,282 INFO L225 Difference]: With dead ends: 49 [2020-12-23 16:53:25,282 INFO L226 Difference]: Without dead ends: 49 [2020-12-23 16:53:25,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-23 16:53:25,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-23 16:53:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 36. [2020-12-23 16:53:25,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-23 16:53:25,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-12-23 16:53:25,287 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 12 [2020-12-23 16:53:25,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:25,287 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-12-23 16:53:25,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:53:25,287 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-12-23 16:53:25,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:53:25,288 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:25,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:25,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 16:53:25,288 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:25,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:25,289 INFO L82 PathProgramCache]: Analyzing trace with hash -1302901600, now seen corresponding path program 1 times [2020-12-23 16:53:25,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:25,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327883894] [2020-12-23 16:53:25,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:25,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327883894] [2020-12-23 16:53:25,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:25,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 16:53:25,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230144731] [2020-12-23 16:53:25,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:53:25,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:53:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:25,339 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 5 states. [2020-12-23 16:53:25,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:25,392 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-12-23 16:53:25,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-23 16:53:25,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 16:53:25,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:25,394 INFO L225 Difference]: With dead ends: 35 [2020-12-23 16:53:25,394 INFO L226 Difference]: Without dead ends: 35 [2020-12-23 16:53:25,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:25,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-23 16:53:25,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-23 16:53:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:53:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2020-12-23 16:53:25,401 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2020-12-23 16:53:25,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:25,401 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2020-12-23 16:53:25,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:53:25,402 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2020-12-23 16:53:25,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:53:25,405 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:25,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:25,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 16:53:25,406 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:25,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1302901599, now seen corresponding path program 1 times [2020-12-23 16:53:25,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:25,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270422622] [2020-12-23 16:53:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:25,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:25,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:25,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270422622] [2020-12-23 16:53:25,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:25,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:53:25,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412647718] [2020-12-23 16:53:25,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:53:25,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:25,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:53:25,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:25,490 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand 5 states. [2020-12-23 16:53:25,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:25,558 INFO L93 Difference]: Finished difference Result 69 states and 79 transitions. [2020-12-23 16:53:25,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:53:25,559 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-23 16:53:25,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:25,559 INFO L225 Difference]: With dead ends: 69 [2020-12-23 16:53:25,559 INFO L226 Difference]: Without dead ends: 69 [2020-12-23 16:53:25,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-12-23 16:53:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2020-12-23 16:53:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-12-23 16:53:25,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2020-12-23 16:53:25,564 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 16 [2020-12-23 16:53:25,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:25,564 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2020-12-23 16:53:25,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:53:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2020-12-23 16:53:25,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-23 16:53:25,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:25,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:25,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 16:53:25,565 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1889707613, now seen corresponding path program 1 times [2020-12-23 16:53:25,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:25,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413380417] [2020-12-23 16:53:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:25,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:25,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413380417] [2020-12-23 16:53:25,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:25,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:53:25,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694770844] [2020-12-23 16:53:25,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:53:25,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:25,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:53:25,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:53:25,802 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand 10 states. [2020-12-23 16:53:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:26,086 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-12-23 16:53:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:53:26,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-12-23 16:53:26,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:26,089 INFO L225 Difference]: With dead ends: 57 [2020-12-23 16:53:26,090 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:53:26,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-23 16:53:26,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:53:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-23 16:53:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-23 16:53:26,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 65 transitions. [2020-12-23 16:53:26,095 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 65 transitions. Word has length 16 [2020-12-23 16:53:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:26,095 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 65 transitions. [2020-12-23 16:53:26,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:53:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 65 transitions. [2020-12-23 16:53:26,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:53:26,096 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:26,101 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:26,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 16:53:26,102 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:26,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:26,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1717205610, now seen corresponding path program 1 times [2020-12-23 16:53:26,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:26,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078653505] [2020-12-23 16:53:26,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:26,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078653505] [2020-12-23 16:53:26,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:26,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 16:53:26,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767305409] [2020-12-23 16:53:26,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 16:53:26,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:26,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 16:53:26,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-23 16:53:26,183 INFO L87 Difference]: Start difference. First operand 55 states and 65 transitions. Second operand 5 states. [2020-12-23 16:53:26,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:26,262 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-12-23 16:53:26,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 16:53:26,262 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-23 16:53:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:26,263 INFO L225 Difference]: With dead ends: 61 [2020-12-23 16:53:26,263 INFO L226 Difference]: Without dead ends: 61 [2020-12-23 16:53:26,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-23 16:53:26,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-23 16:53:26,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2020-12-23 16:53:26,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-23 16:53:26,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2020-12-23 16:53:26,268 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 17 [2020-12-23 16:53:26,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:26,268 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2020-12-23 16:53:26,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 16:53:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2020-12-23 16:53:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:53:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:26,276 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:26,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 16:53:26,276 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:26,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:26,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1566644436, now seen corresponding path program 1 times [2020-12-23 16:53:26,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:26,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228703708] [2020-12-23 16:53:26,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:26,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:26,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:26,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228703708] [2020-12-23 16:53:26,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:26,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-23 16:53:26,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234023842] [2020-12-23 16:53:26,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-23 16:53:26,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:26,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-23 16:53:26,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-23 16:53:26,410 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand 9 states. [2020-12-23 16:53:26,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:26,595 INFO L93 Difference]: Finished difference Result 85 states and 96 transitions. [2020-12-23 16:53:26,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-23 16:53:26,596 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-12-23 16:53:26,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:26,596 INFO L225 Difference]: With dead ends: 85 [2020-12-23 16:53:26,597 INFO L226 Difference]: Without dead ends: 85 [2020-12-23 16:53:26,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-12-23 16:53:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-23 16:53:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 71. [2020-12-23 16:53:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-12-23 16:53:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 81 transitions. [2020-12-23 16:53:26,601 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 81 transitions. Word has length 17 [2020-12-23 16:53:26,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:26,601 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 81 transitions. [2020-12-23 16:53:26,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-23 16:53:26,602 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 81 transitions. [2020-12-23 16:53:26,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-23 16:53:26,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:26,602 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:26,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 16:53:26,603 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:26,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:26,603 INFO L82 PathProgramCache]: Analyzing trace with hash 286780758, now seen corresponding path program 1 times [2020-12-23 16:53:26,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:26,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427415947] [2020-12-23 16:53:26,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:26,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:26,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427415947] [2020-12-23 16:53:26,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:26,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-12-23 16:53:26,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194367927] [2020-12-23 16:53:26,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-23 16:53:26,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:26,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-23 16:53:26,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-12-23 16:53:26,758 INFO L87 Difference]: Start difference. First operand 71 states and 81 transitions. Second operand 10 states. [2020-12-23 16:53:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:26,922 INFO L93 Difference]: Finished difference Result 107 states and 120 transitions. [2020-12-23 16:53:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:53:26,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2020-12-23 16:53:26,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:26,923 INFO L225 Difference]: With dead ends: 107 [2020-12-23 16:53:26,923 INFO L226 Difference]: Without dead ends: 107 [2020-12-23 16:53:26,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2020-12-23 16:53:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-12-23 16:53:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 73. [2020-12-23 16:53:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-23 16:53:26,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2020-12-23 16:53:26,936 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 17 [2020-12-23 16:53:26,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:26,938 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2020-12-23 16:53:26,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-23 16:53:26,938 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2020-12-23 16:53:26,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 16:53:26,941 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:26,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:26,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 16:53:26,942 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:26,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2041976217, now seen corresponding path program 1 times [2020-12-23 16:53:26,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:26,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923279239] [2020-12-23 16:53:26,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:27,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923279239] [2020-12-23 16:53:27,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 16:53:27,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 16:53:27,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344167749] [2020-12-23 16:53:27,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 16:53:27,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:27,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 16:53:27,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:27,024 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand 4 states. [2020-12-23 16:53:27,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:27,042 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-12-23 16:53:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 16:53:27,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-23 16:53:27,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:27,043 INFO L225 Difference]: With dead ends: 72 [2020-12-23 16:53:27,043 INFO L226 Difference]: Without dead ends: 43 [2020-12-23 16:53:27,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 16:53:27,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-23 16:53:27,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-12-23 16:53:27,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-12-23 16:53:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-12-23 16:53:27,046 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 18 [2020-12-23 16:53:27,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:27,047 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-12-23 16:53:27,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 16:53:27,047 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-12-23 16:53:27,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-23 16:53:27,048 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:27,048 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:27,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-23 16:53:27,048 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:27,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:27,049 INFO L82 PathProgramCache]: Analyzing trace with hash -2012971173, now seen corresponding path program 1 times [2020-12-23 16:53:27,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:27,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510994329] [2020-12-23 16:53:27,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:27,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:27,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510994329] [2020-12-23 16:53:27,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509095708] [2020-12-23 16:53:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:27,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 51 conjunts are in the unsatisfiable core [2020-12-23 16:53:27,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:27,578 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_15|], 1=[|v_#valid_22|]} [2020-12-23 16:53:27,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:27,588 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:27,591 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:27,608 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:27,623 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:27,627 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:27,639 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:27,645 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:27,645 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-23 16:53:28,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:28,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:28,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2020-12-23 16:53:28,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081635320] [2020-12-23 16:53:28,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:53:28,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:28,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:53:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:53:28,081 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 22 states. [2020-12-23 16:53:28,876 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-23 16:53:29,049 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-12-23 16:53:29,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:29,356 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-12-23 16:53:29,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-23 16:53:29,357 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 20 [2020-12-23 16:53:29,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:29,357 INFO L225 Difference]: With dead ends: 53 [2020-12-23 16:53:29,358 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 16:53:29,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=178, Invalid=1012, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:53:29,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 16:53:29,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-12-23 16:53:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:53:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-12-23 16:53:29,360 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 20 [2020-12-23 16:53:29,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:29,360 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-12-23 16:53:29,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:53:29,360 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-12-23 16:53:29,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-23 16:53:29,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:29,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:29,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:29,572 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash -718716967, now seen corresponding path program 1 times [2020-12-23 16:53:29,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:29,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82717736] [2020-12-23 16:53:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:29,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:29,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82717736] [2020-12-23 16:53:29,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752676422] [2020-12-23 16:53:29,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:29,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-23 16:53:29,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:29,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:29,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2020-12-23 16:53:29,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001246870] [2020-12-23 16:53:29,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-23 16:53:29,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-23 16:53:29,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-12-23 16:53:29,926 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 17 states. [2020-12-23 16:53:30,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:30,199 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-23 16:53:30,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-23 16:53:30,199 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 21 [2020-12-23 16:53:30,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:30,200 INFO L225 Difference]: With dead ends: 40 [2020-12-23 16:53:30,200 INFO L226 Difference]: Without dead ends: 40 [2020-12-23 16:53:30,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-12-23 16:53:30,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-23 16:53:30,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2020-12-23 16:53:30,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-23 16:53:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-12-23 16:53:30,202 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 21 [2020-12-23 16:53:30,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:30,203 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-12-23 16:53:30,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-23 16:53:30,203 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-12-23 16:53:30,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-23 16:53:30,203 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:30,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:30,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:30,419 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:30,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:30,420 INFO L82 PathProgramCache]: Analyzing trace with hash -805389510, now seen corresponding path program 1 times [2020-12-23 16:53:30,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:30,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878713195] [2020-12-23 16:53:30,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:30,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:53:30,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878713195] [2020-12-23 16:53:30,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634003600] [2020-12-23 16:53:30,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:30,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:30,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-23 16:53:30,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:30,731 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_16|], 1=[|v_#valid_23|]} [2020-12-23 16:53:30,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:30,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:30,740 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:30,749 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:30,755 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:30,758 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:30,766 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:30,777 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:30,777 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:24, output treesize:12 [2020-12-23 16:53:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:53:31,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:31,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-23 16:53:31,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828337607] [2020-12-23 16:53:31,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:53:31,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:53:31,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:53:31,072 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 19 states. [2020-12-23 16:53:31,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:31,577 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2020-12-23 16:53:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-23 16:53:31,577 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 22 [2020-12-23 16:53:31,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:31,578 INFO L225 Difference]: With dead ends: 36 [2020-12-23 16:53:31,578 INFO L226 Difference]: Without dead ends: 36 [2020-12-23 16:53:31,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:53:31,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-23 16:53:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-12-23 16:53:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-23 16:53:31,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-12-23 16:53:31,580 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 22 [2020-12-23 16:53:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:31,581 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-12-23 16:53:31,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:53:31,581 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-12-23 16:53:31,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-23 16:53:31,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:31,581 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:31,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:31,796 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash -279519168, now seen corresponding path program 1 times [2020-12-23 16:53:31,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:31,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68653953] [2020-12-23 16:53:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:53:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68653953] [2020-12-23 16:53:32,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461431411] [2020-12-23 16:53:32,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:32,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 54 conjunts are in the unsatisfiable core [2020-12-23 16:53:32,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:32,240 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_24|]} [2020-12-23 16:53:32,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:32,245 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:32,245 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:32,253 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:32,257 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:32,259 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:32,267 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:32,270 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:32,270 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-23 16:53:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-23 16:53:32,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:32,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-12-23 16:53:32,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87431865] [2020-12-23 16:53:32,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-23 16:53:32,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:32,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-23 16:53:32,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-12-23 16:53:32,567 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 19 states. [2020-12-23 16:53:33,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:33,495 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-12-23 16:53:33,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:53:33,496 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-12-23 16:53:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:33,496 INFO L225 Difference]: With dead ends: 40 [2020-12-23 16:53:33,497 INFO L226 Difference]: Without dead ends: 32 [2020-12-23 16:53:33,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=1032, Unknown=0, NotChecked=0, Total=1190 [2020-12-23 16:53:33,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-23 16:53:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-12-23 16:53:33,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-23 16:53:33,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-12-23 16:53:33,503 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 26 [2020-12-23 16:53:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:33,505 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-12-23 16:53:33,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-23 16:53:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-12-23 16:53:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-23 16:53:33,507 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:33,507 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:33,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-23 16:53:33,722 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:33,723 INFO L82 PathProgramCache]: Analyzing trace with hash -57121321, now seen corresponding path program 2 times [2020-12-23 16:53:33,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:33,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647937055] [2020-12-23 16:53:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:34,045 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:34,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647937055] [2020-12-23 16:53:34,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806232503] [2020-12-23 16:53:34,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:34,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:53:34,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:34,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 53 conjunts are in the unsatisfiable core [2020-12-23 16:53:34,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:34,140 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_18|], 1=[|v_#valid_25|]} [2020-12-23 16:53:34,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:34,146 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:34,148 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,175 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,180 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:34,181 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,193 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,193 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:53:34,269 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-23 16:53:34,270 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,278 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,280 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:53:34,543 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:53:34,544 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,558 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,561 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:34,562 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:29 [2020-12-23 16:53:34,713 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,714 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:53:34,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:53:34,729 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:34,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:53:34,734 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:34,734 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-12-23 16:53:34,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:34,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:34,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2020-12-23 16:53:34,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421224814] [2020-12-23 16:53:34,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-12-23 16:53:34,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:34,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-12-23 16:53:34,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=594, Unknown=0, NotChecked=0, Total=650 [2020-12-23 16:53:34,913 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 26 states. [2020-12-23 16:53:35,584 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-23 16:53:35,794 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-12-23 16:53:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:37,412 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-12-23 16:53:37,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 16:53:37,413 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 27 [2020-12-23 16:53:37,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:37,414 INFO L225 Difference]: With dead ends: 58 [2020-12-23 16:53:37,414 INFO L226 Difference]: Without dead ends: 45 [2020-12-23 16:53:37,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=323, Invalid=2227, Unknown=0, NotChecked=0, Total=2550 [2020-12-23 16:53:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-12-23 16:53:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-12-23 16:53:37,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-23 16:53:37,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-12-23 16:53:37,417 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 27 [2020-12-23 16:53:37,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:37,417 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-12-23 16:53:37,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-12-23 16:53:37,417 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-12-23 16:53:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-23 16:53:37,417 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:37,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:37,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:37,619 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:37,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:37,620 INFO L82 PathProgramCache]: Analyzing trace with hash 614687385, now seen corresponding path program 2 times [2020-12-23 16:53:37,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:37,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933643028] [2020-12-23 16:53:37,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:53:37,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933643028] [2020-12-23 16:53:37,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300145819] [2020-12-23 16:53:37,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:38,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:53:38,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-23 16:53:38,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:38,120 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_19|], 1=[|v_#valid_26|]} [2020-12-23 16:53:38,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:38,129 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:38,130 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:38,140 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:38,146 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:38,152 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:38,162 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:38,165 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:38,166 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:21, output treesize:9 [2020-12-23 16:53:38,648 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-23 16:53:38,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:38,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-23 16:53:38,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749868885] [2020-12-23 16:53:38,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 16:53:38,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:38,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 16:53:38,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=542, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:53:38,651 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 25 states. [2020-12-23 16:53:39,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:39,832 INFO L93 Difference]: Finished difference Result 48 states and 49 transitions. [2020-12-23 16:53:39,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:53:39,833 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 32 [2020-12-23 16:53:39,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:39,834 INFO L225 Difference]: With dead ends: 48 [2020-12-23 16:53:39,834 INFO L226 Difference]: Without dead ends: 48 [2020-12-23 16:53:39,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=1459, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:53:39,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-23 16:53:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-12-23 16:53:39,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-23 16:53:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-23 16:53:39,838 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 32 [2020-12-23 16:53:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:39,838 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-23 16:53:39,838 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 16:53:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-23 16:53:39,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-23 16:53:39,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:39,839 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:40,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:40,053 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:40,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:40,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1981775400, now seen corresponding path program 3 times [2020-12-23 16:53:40,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:40,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181317151] [2020-12-23 16:53:40,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:40,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:40,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181317151] [2020-12-23 16:53:40,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185174419] [2020-12-23 16:53:40,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:40,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-23 16:53:40,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:40,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 67 conjunts are in the unsatisfiable core [2020-12-23 16:53:40,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:40,696 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:40,698 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:40,703 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:40,703 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:40,703 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:53:40,859 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:53:40,860 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:40,868 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:40,870 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:40,870 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:53:41,075 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-23 16:53:41,076 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:41,085 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:41,087 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:41,087 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:53:41,170 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:53:41,171 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:41,176 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:41,178 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:41,178 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:12 [2020-12-23 16:53:41,241 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:53:41,241 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:41,244 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:41,244 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:41,245 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:53:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:41,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:41,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 29 [2020-12-23 16:53:41,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153940807] [2020-12-23 16:53:41,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-23 16:53:41,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:41,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-23 16:53:41,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2020-12-23 16:53:41,256 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 29 states. [2020-12-23 16:53:42,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:42,188 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-12-23 16:53:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:53:42,188 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 37 [2020-12-23 16:53:42,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:42,189 INFO L225 Difference]: With dead ends: 72 [2020-12-23 16:53:42,189 INFO L226 Difference]: Without dead ends: 53 [2020-12-23 16:53:42,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=205, Invalid=1435, Unknown=0, NotChecked=0, Total=1640 [2020-12-23 16:53:42,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-23 16:53:42,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-12-23 16:53:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 16:53:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-12-23 16:53:42,192 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 37 [2020-12-23 16:53:42,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:42,192 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-12-23 16:53:42,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-12-23 16:53:42,192 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-12-23 16:53:42,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-23 16:53:42,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:42,193 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:42,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-23 16:53:42,395 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:42,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:42,396 INFO L82 PathProgramCache]: Analyzing trace with hash 207254747, now seen corresponding path program 4 times [2020-12-23 16:53:42,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:42,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350924026] [2020-12-23 16:53:42,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:42,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350924026] [2020-12-23 16:53:42,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233000576] [2020-12-23 16:53:42,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:42,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:53:42,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 47 conjunts are in the unsatisfiable core [2020-12-23 16:53:42,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:42,762 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:42,763 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:53:42,764 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:42,786 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:53:42,788 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:42,789 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:53:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:43,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:43,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 24 [2020-12-23 16:53:43,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135008029] [2020-12-23 16:53:43,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-23 16:53:43,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:43,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-23 16:53:43,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2020-12-23 16:53:43,136 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 25 states. [2020-12-23 16:53:43,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:43,746 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-12-23 16:53:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-23 16:53:43,746 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 41 [2020-12-23 16:53:43,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:43,747 INFO L225 Difference]: With dead ends: 51 [2020-12-23 16:53:43,747 INFO L226 Difference]: Without dead ends: 51 [2020-12-23 16:53:43,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=867, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:53:43,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-12-23 16:53:43,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-12-23 16:53:43,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-23 16:53:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-12-23 16:53:43,749 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 41 [2020-12-23 16:53:43,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:43,749 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-12-23 16:53:43,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-23 16:53:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-12-23 16:53:43,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-23 16:53:43,750 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:43,750 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:43,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-23 16:53:43,964 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:43,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:43,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1595560281, now seen corresponding path program 5 times [2020-12-23 16:53:43,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:43,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839885364] [2020-12-23 16:53:43,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:44,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839885364] [2020-12-23 16:53:44,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062336901] [2020-12-23 16:53:44,469 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:44,795 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-23 16:53:44,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:44,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 85 conjunts are in the unsatisfiable core [2020-12-23 16:53:44,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:44,811 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:44,813 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:44,822 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:44,823 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:44,823 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-23 16:53:44,912 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:53:44,913 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:44,923 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:44,925 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:44,925 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2020-12-23 16:53:44,992 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:53:44,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:45,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:53:45,100 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:53:45,101 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,109 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:45,110 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,110 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:53:45,207 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:53:45,209 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,217 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:45,218 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,219 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:26, output treesize:15 [2020-12-23 16:53:45,301 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:53:45,302 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,304 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:45,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:45,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2020-12-23 16:53:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:45,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:45,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 30 [2020-12-23 16:53:45,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63803346] [2020-12-23 16:53:45,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-23 16:53:45,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:45,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-23 16:53:45,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=790, Unknown=0, NotChecked=0, Total=870 [2020-12-23 16:53:45,322 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 30 states. [2020-12-23 16:53:46,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:46,461 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-12-23 16:53:46,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-23 16:53:46,461 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 47 [2020-12-23 16:53:46,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:46,462 INFO L225 Difference]: With dead ends: 82 [2020-12-23 16:53:46,462 INFO L226 Difference]: Without dead ends: 57 [2020-12-23 16:53:46,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=194, Invalid=1612, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:53:46,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-23 16:53:46,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-12-23 16:53:46,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-23 16:53:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-12-23 16:53:46,466 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 47 [2020-12-23 16:53:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:46,466 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-12-23 16:53:46,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-12-23 16:53:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-12-23 16:53:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-23 16:53:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:46,467 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:46,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-23 16:53:46,680 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:46,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:46,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1297179492, now seen corresponding path program 6 times [2020-12-23 16:53:46,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:46,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928606117] [2020-12-23 16:53:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:46,945 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:46,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928606117] [2020-12-23 16:53:46,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521150549] [2020-12-23 16:53:46,945 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:47,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-12-23 16:53:47,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:47,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-23 16:53:47,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:47,177 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:47,177 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:53:47,179 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:47,199 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:53:47,201 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:47,201 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:53:47,416 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 15 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:47,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:47,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 21 [2020-12-23 16:53:47,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679141435] [2020-12-23 16:53:47,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-23 16:53:47,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:47,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-23 16:53:47,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2020-12-23 16:53:47,418 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 22 states. [2020-12-23 16:53:48,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:48,039 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-12-23 16:53:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-23 16:53:48,040 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-12-23 16:53:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:48,040 INFO L225 Difference]: With dead ends: 62 [2020-12-23 16:53:48,040 INFO L226 Difference]: Without dead ends: 62 [2020-12-23 16:53:48,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2020-12-23 16:53:48,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-23 16:53:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-12-23 16:53:48,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-23 16:53:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-12-23 16:53:48,043 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 51 [2020-12-23 16:53:48,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:48,043 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-12-23 16:53:48,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-23 16:53:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-12-23 16:53:48,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-23 16:53:48,044 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:48,044 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:48,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-23 16:53:48,258 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:48,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1557858601, now seen corresponding path program 3 times [2020-12-23 16:53:48,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:48,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772523574] [2020-12-23 16:53:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:53:48,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772523574] [2020-12-23 16:53:48,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987288643] [2020-12-23 16:53:48,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:48,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-23 16:53:48,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:48,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-23 16:53:48,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:48,838 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_22|], 1=[|v_#valid_29|]} [2020-12-23 16:53:48,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:53:48,843 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:53:48,844 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:48,851 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:48,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:48,857 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:48,864 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:48,865 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:48,866 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:13 [2020-12-23 16:53:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-12-23 16:53:49,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:49,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 31 [2020-12-23 16:53:49,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81537985] [2020-12-23 16:53:49,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-12-23 16:53:49,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:49,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-12-23 16:53:49,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2020-12-23 16:53:49,526 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 32 states. [2020-12-23 16:53:50,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:50,958 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2020-12-23 16:53:50,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-23 16:53:50,958 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 52 [2020-12-23 16:53:50,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:50,959 INFO L225 Difference]: With dead ends: 60 [2020-12-23 16:53:50,959 INFO L226 Difference]: Without dead ends: 60 [2020-12-23 16:53:50,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=294, Invalid=2462, Unknown=0, NotChecked=0, Total=2756 [2020-12-23 16:53:50,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-23 16:53:50,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-12-23 16:53:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-23 16:53:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-12-23 16:53:50,963 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-12-23 16:53:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:50,963 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-12-23 16:53:50,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-12-23 16:53:50,964 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-12-23 16:53:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 16:53:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:50,964 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:51,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-23 16:53:51,179 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:51,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:51,179 INFO L82 PathProgramCache]: Analyzing trace with hash -351804326, now seen corresponding path program 7 times [2020-12-23 16:53:51,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:51,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388672635] [2020-12-23 16:53:51,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:51,869 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:51,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388672635] [2020-12-23 16:53:51,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183809380] [2020-12-23 16:53:51,870 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:51,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 93 conjunts are in the unsatisfiable core [2020-12-23 16:53:51,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:51,986 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:51,988 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:51,992 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:51,992 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:51,992 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:53:52,293 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:53:52,294 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,303 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,304 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:52,305 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:53:52,547 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-23 16:53:52,548 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,559 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,561 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:52,561 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:53:52,657 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:53:52,659 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,666 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,666 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:53:52,730 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:53:52,732 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,737 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,738 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:53:52,806 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:53:52,807 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,815 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:53:52,824 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:53:52,825 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:52,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:52,827 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:53:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 18 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:52,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:52,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 22] total 40 [2020-12-23 16:53:52,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339672207] [2020-12-23 16:53:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-12-23 16:53:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-12-23 16:53:52,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1453, Unknown=0, NotChecked=0, Total=1560 [2020-12-23 16:53:52,845 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 40 states. [2020-12-23 16:53:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:54,559 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2020-12-23 16:53:54,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:53:54,560 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 57 [2020-12-23 16:53:54,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:54,561 INFO L225 Difference]: With dead ends: 96 [2020-12-23 16:53:54,561 INFO L226 Difference]: Without dead ends: 65 [2020-12-23 16:53:54,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=274, Invalid=2806, Unknown=0, NotChecked=0, Total=3080 [2020-12-23 16:53:54,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-12-23 16:53:54,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2020-12-23 16:53:54,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-12-23 16:53:54,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-12-23 16:53:54,564 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 57 [2020-12-23 16:53:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:54,565 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-12-23 16:53:54,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-12-23 16:53:54,565 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-12-23 16:53:54,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 16:53:54,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:54,566 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:54,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:54,778 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:54,779 INFO L82 PathProgramCache]: Analyzing trace with hash -841664547, now seen corresponding path program 8 times [2020-12-23 16:53:54,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:54,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651431105] [2020-12-23 16:53:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:54,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:55,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651431105] [2020-12-23 16:53:55,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285875059] [2020-12-23 16:53:55,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:55,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:53:55,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:55,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 65 conjunts are in the unsatisfiable core [2020-12-23 16:53:55,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:55,224 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:55,225 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:53:55,226 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:55,252 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:53:55,256 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:55,256 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:53:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:55,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:55,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2020-12-23 16:53:55,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226192277] [2020-12-23 16:53:55,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-23 16:53:55,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:55,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-23 16:53:55,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2020-12-23 16:53:55,850 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 33 states. [2020-12-23 16:53:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:53:56,719 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-12-23 16:53:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-23 16:53:56,720 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-12-23 16:53:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:53:56,721 INFO L225 Difference]: With dead ends: 70 [2020-12-23 16:53:56,721 INFO L226 Difference]: Without dead ends: 70 [2020-12-23 16:53:56,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=300, Invalid=1506, Unknown=0, NotChecked=0, Total=1806 [2020-12-23 16:53:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-12-23 16:53:56,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-12-23 16:53:56,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-23 16:53:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-12-23 16:53:56,725 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 61 [2020-12-23 16:53:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:53:56,725 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-12-23 16:53:56,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-23 16:53:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-12-23 16:53:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-12-23 16:53:56,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:53:56,726 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:53:56,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:56,941 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:53:56,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:53:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1711491803, now seen corresponding path program 9 times [2020-12-23 16:53:56,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:53:56,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027103628] [2020-12-23 16:53:56,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:53:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:53:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:57,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027103628] [2020-12-23 16:53:57,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585084440] [2020-12-23 16:53:57,800 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:53:58,041 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-23 16:53:58,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:53:58,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 147 conjunts are in the unsatisfiable core [2020-12-23 16:53:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:53:58,064 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:53:58,066 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:58,074 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:58,075 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:58,075 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-23 16:53:58,551 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:53:58,551 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:58,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:58,566 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:58,566 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-23 16:53:58,888 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:53:58,889 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:58,902 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:58,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:58,904 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:53:59,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:53:59,102 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,116 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,118 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:59,118 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:53:59,305 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:53:59,307 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,322 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,324 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:59,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:53:59,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:53:59,510 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,523 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,525 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:59,525 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:53:59,715 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:53:59,716 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,730 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,732 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:53:59,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:53:59,894 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:53:59,896 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,896 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-12-23 16:53:59,897 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,903 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:53:59,904 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:53:59,904 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-23 16:53:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:53:59,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:53:59,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 25] total 52 [2020-12-23 16:53:59,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987319678] [2020-12-23 16:53:59,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-12-23 16:53:59,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:53:59,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-12-23 16:53:59,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2504, Unknown=0, NotChecked=0, Total=2652 [2020-12-23 16:53:59,943 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 52 states. [2020-12-23 16:54:01,062 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2020-12-23 16:54:01,504 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-23 16:54:01,907 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 16:54:02,308 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-12-23 16:54:02,694 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 16:54:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:03,131 INFO L93 Difference]: Finished difference Result 112 states and 113 transitions. [2020-12-23 16:54:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-12-23 16:54:03,132 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 67 [2020-12-23 16:54:03,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:03,132 INFO L225 Difference]: With dead ends: 112 [2020-12-23 16:54:03,132 INFO L226 Difference]: Without dead ends: 75 [2020-12-23 16:54:03,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 964 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=392, Invalid=4164, Unknown=0, NotChecked=0, Total=4556 [2020-12-23 16:54:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-12-23 16:54:03,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-12-23 16:54:03,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-23 16:54:03,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-12-23 16:54:03,136 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 67 [2020-12-23 16:54:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:03,136 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-12-23 16:54:03,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-12-23 16:54:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-12-23 16:54:03,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 16:54:03,137 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:03,137 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:03,351 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2020-12-23 16:54:03,352 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1133270686, now seen corresponding path program 10 times [2020-12-23 16:54:03,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:03,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779084551] [2020-12-23 16:54:03,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:03,770 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 28 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:03,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779084551] [2020-12-23 16:54:03,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149085587] [2020-12-23 16:54:03,770 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:03,994 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:54:03,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:54:03,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 72 conjunts are in the unsatisfiable core [2020-12-23 16:54:03,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 45 proven. 123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:04,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:04,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 30 [2020-12-23 16:54:04,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763081743] [2020-12-23 16:54:04,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-23 16:54:04,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:04,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-23 16:54:04,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2020-12-23 16:54:04,435 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 31 states. [2020-12-23 16:54:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:05,460 INFO L93 Difference]: Finished difference Result 80 states and 81 transitions. [2020-12-23 16:54:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-23 16:54:05,461 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 71 [2020-12-23 16:54:05,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:05,462 INFO L225 Difference]: With dead ends: 80 [2020-12-23 16:54:05,462 INFO L226 Difference]: Without dead ends: 80 [2020-12-23 16:54:05,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=351, Invalid=1371, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 16:54:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-23 16:54:05,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2020-12-23 16:54:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-12-23 16:54:05,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-12-23 16:54:05,465 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 71 [2020-12-23 16:54:05,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:05,465 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-12-23 16:54:05,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-23 16:54:05,466 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-12-23 16:54:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-12-23 16:54:05,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:05,466 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:05,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:05,682 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:05,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:05,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1392415964, now seen corresponding path program 11 times [2020-12-23 16:54:05,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:05,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553220112] [2020-12-23 16:54:05,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 26 proven. 180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:06,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553220112] [2020-12-23 16:54:06,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70592161] [2020-12-23 16:54:06,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:07,412 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-12-23 16:54:07,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:54:07,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 129 conjunts are in the unsatisfiable core [2020-12-23 16:54:07,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:07,429 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_24|], 1=[|v_#valid_32|]} [2020-12-23 16:54:07,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:54:07,433 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:54:07,434 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:07,445 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:07,450 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:54:07,453 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:07,464 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:07,465 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:07,465 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:54:07,909 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-23 16:54:07,909 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:07,918 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:07,918 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:07,918 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:54:08,203 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:08,204 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,219 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:08,220 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,221 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:54:08,403 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:08,405 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,415 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:08,417 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,417 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:54:08,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:08,586 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,597 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:08,598 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,598 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:54:08,765 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:08,766 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,776 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:08,778 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,778 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:54:08,958 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:08,959 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,970 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:08,972 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:08,972 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:54:09,175 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:09,181 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:09,191 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:09,193 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:09,193 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-23 16:54:09,408 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:09,408 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-23 16:54:09,410 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:54:09,421 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:09,422 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:09,422 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:19 [2020-12-23 16:54:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 45 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:09,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:09,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 27] total 60 [2020-12-23 16:54:09,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151153836] [2020-12-23 16:54:09,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-12-23 16:54:09,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:09,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-12-23 16:54:09,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=3388, Unknown=0, NotChecked=0, Total=3540 [2020-12-23 16:54:09,732 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 60 states. [2020-12-23 16:54:11,765 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-23 16:54:12,082 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 16:54:17,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:17,394 INFO L93 Difference]: Finished difference Result 136 states and 137 transitions. [2020-12-23 16:54:17,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-23 16:54:17,394 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 77 [2020-12-23 16:54:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:17,395 INFO L225 Difference]: With dead ends: 136 [2020-12-23 16:54:17,395 INFO L226 Difference]: Without dead ends: 93 [2020-12-23 16:54:17,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=868, Invalid=10904, Unknown=0, NotChecked=0, Total=11772 [2020-12-23 16:54:17,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-12-23 16:54:17,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2020-12-23 16:54:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-12-23 16:54:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-12-23 16:54:17,402 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 77 [2020-12-23 16:54:17,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:17,402 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-12-23 16:54:17,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-12-23 16:54:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-12-23 16:54:17,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-23 16:54:17,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:17,404 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:17,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-23 16:54:17,606 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:17,607 INFO L82 PathProgramCache]: Analyzing trace with hash -2138844579, now seen corresponding path program 12 times [2020-12-23 16:54:17,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:17,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63254536] [2020-12-23 16:54:17,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:19,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63254536] [2020-12-23 16:54:19,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856465434] [2020-12-23 16:54:19,120 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:19,675 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-23 16:54:19,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:54:19,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 182 conjunts are in the unsatisfiable core [2020-12-23 16:54:19,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:19,694 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:54:19,695 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:19,704 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:19,705 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:19,705 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-23 16:54:20,416 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:54:20,417 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:20,431 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:20,432 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:20,432 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-23 16:54:20,851 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:20,854 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:20,869 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:20,871 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:20,872 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:54:21,101 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:21,103 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:21,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:21,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:21,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:54:21,357 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:21,359 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:21,375 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:21,377 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:21,377 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:54:21,625 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:21,626 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:21,642 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:21,644 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:21,644 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:54:21,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:21,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:21,895 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:21,898 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:21,898 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:26 [2020-12-23 16:54:22,141 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:22,143 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:22,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:22,156 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:22,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:37, output treesize:26 [2020-12-23 16:54:22,401 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:54:22,402 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:22,416 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:22,418 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:22,418 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:22 [2020-12-23 16:54:22,625 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:54:22,627 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:22,627 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-12-23 16:54:22,630 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:22,637 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:22,638 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:22,638 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:3 [2020-12-23 16:54:22,685 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 30 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:22,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:22,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31] total 66 [2020-12-23 16:54:22,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234764061] [2020-12-23 16:54:22,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-12-23 16:54:22,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:22,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-12-23 16:54:22,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=4100, Unknown=0, NotChecked=0, Total=4290 [2020-12-23 16:54:22,687 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 66 states. [2020-12-23 16:54:24,450 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2020-12-23 16:54:24,946 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-23 16:54:25,429 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-23 16:54:25,920 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-23 16:54:26,406 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2020-12-23 16:54:26,901 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-12-23 16:54:27,364 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-12-23 16:54:27,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:27,948 INFO L93 Difference]: Finished difference Result 144 states and 145 transitions. [2020-12-23 16:54:27,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:54:27,949 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 87 [2020-12-23 16:54:27,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:27,950 INFO L225 Difference]: With dead ends: 144 [2020-12-23 16:54:27,950 INFO L226 Difference]: Without dead ends: 95 [2020-12-23 16:54:27,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1641 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=502, Invalid=6808, Unknown=0, NotChecked=0, Total=7310 [2020-12-23 16:54:27,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-12-23 16:54:27,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 92. [2020-12-23 16:54:27,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-23 16:54:27,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-12-23 16:54:27,954 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 87 [2020-12-23 16:54:27,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:27,955 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-12-23 16:54:27,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-12-23 16:54:27,955 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-12-23 16:54:27,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-12-23 16:54:27,956 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:27,956 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:28,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-23 16:54:28,170 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:28,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:28,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1788632736, now seen corresponding path program 13 times [2020-12-23 16:54:28,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:28,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144882783] [2020-12-23 16:54:28,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 66 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:28,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144882783] [2020-12-23 16:54:28,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168438428] [2020-12-23 16:54:28,716 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:28,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:28,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-23 16:54:28,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:29,432 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 91 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:29,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:29,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 36 [2020-12-23 16:54:29,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959793999] [2020-12-23 16:54:29,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-23 16:54:29,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:29,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-23 16:54:29,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1169, Unknown=0, NotChecked=0, Total=1332 [2020-12-23 16:54:29,433 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 37 states. [2020-12-23 16:54:30,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:30,862 INFO L93 Difference]: Finished difference Result 100 states and 101 transitions. [2020-12-23 16:54:30,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-23 16:54:30,863 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 91 [2020-12-23 16:54:30,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:30,864 INFO L225 Difference]: With dead ends: 100 [2020-12-23 16:54:30,864 INFO L226 Difference]: Without dead ends: 100 [2020-12-23 16:54:30,865 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=498, Invalid=1952, Unknown=0, NotChecked=0, Total=2450 [2020-12-23 16:54:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-12-23 16:54:30,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2020-12-23 16:54:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-23 16:54:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2020-12-23 16:54:30,868 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 91 [2020-12-23 16:54:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:30,868 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2020-12-23 16:54:30,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-12-23 16:54:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2020-12-23 16:54:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-23 16:54:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:30,869 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:31,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-23 16:54:31,070 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:31,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1984621730, now seen corresponding path program 14 times [2020-12-23 16:54:31,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:31,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541440803] [2020-12-23 16:54:31,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 34 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:32,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541440803] [2020-12-23 16:54:32,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425738269] [2020-12-23 16:54:32,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:32,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:54:32,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:54:32,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 152 conjunts are in the unsatisfiable core [2020-12-23 16:54:32,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:32,995 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_25|], 1=[|v_#valid_34|]} [2020-12-23 16:54:33,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:54:33,002 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:54:33,003 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:33,013 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:33,018 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:54:33,020 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:33,029 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:33,031 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:33,031 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:54:33,725 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-23 16:54:33,726 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:33,735 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:33,736 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:33,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:54:34,338 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:34,339 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:34,356 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:34,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:34,358 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:34,641 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:34,642 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:34,657 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:34,659 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:34,659 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:34,930 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:34,931 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:34,949 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:34,951 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:34,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:35,259 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:35,260 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:35,275 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:35,277 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:35,278 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:35,595 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:35,596 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:35,614 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:35,619 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:35,619 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:35,938 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:35,939 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:35,957 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:35,959 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:35,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:36,284 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:36,286 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:36,300 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:36,302 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:36,303 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:44, output treesize:33 [2020-12-23 16:54:36,638 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2020-12-23 16:54:36,639 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:36,654 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:36,657 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:36,657 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:44, output treesize:29 [2020-12-23 16:54:37,022 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:37,023 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2020-12-23 16:54:37,025 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:54:37,041 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:37,042 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-23 16:54:37,044 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:37,044 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:38, output treesize:35 [2020-12-23 16:54:37,563 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 91 proven. 263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:37,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:37,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 34] total 75 [2020-12-23 16:54:37,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461957556] [2020-12-23 16:54:37,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-12-23 16:54:37,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-12-23 16:54:37,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=5349, Unknown=0, NotChecked=0, Total=5550 [2020-12-23 16:54:37,565 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand 75 states. [2020-12-23 16:54:41,124 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-12-23 16:54:41,553 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 69 [2020-12-23 16:54:43,022 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-12-23 16:54:49,958 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 46 [2020-12-23 16:54:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:54:51,250 INFO L93 Difference]: Finished difference Result 168 states and 169 transitions. [2020-12-23 16:54:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-12-23 16:54:51,250 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 97 [2020-12-23 16:54:51,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:54:51,251 INFO L225 Difference]: With dead ends: 168 [2020-12-23 16:54:51,251 INFO L226 Difference]: Without dead ends: 113 [2020-12-23 16:54:51,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2824 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1189, Invalid=16901, Unknown=0, NotChecked=0, Total=18090 [2020-12-23 16:54:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-23 16:54:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2020-12-23 16:54:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-23 16:54:51,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2020-12-23 16:54:51,255 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 97 [2020-12-23 16:54:51,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:54:51,255 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2020-12-23 16:54:51,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-12-23 16:54:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2020-12-23 16:54:51,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-23 16:54:51,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:54:51,256 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:54:51,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-23 16:54:51,471 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:54:51,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:54:51,472 INFO L82 PathProgramCache]: Analyzing trace with hash -682858529, now seen corresponding path program 15 times [2020-12-23 16:54:51,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:54:51,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980443528] [2020-12-23 16:54:51,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:54:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:54:53,588 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 38 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:53,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980443528] [2020-12-23 16:54:53,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797187683] [2020-12-23 16:54:53,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:54:57,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2020-12-23 16:54:57,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:54:57,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 168 conjunts are in the unsatisfiable core [2020-12-23 16:54:57,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:54:57,030 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:54:57,031 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:57,035 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:57,038 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:57,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:54:57,977 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:54:57,978 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:57,987 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:57,988 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:57,989 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:54:58,439 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-23 16:54:58,440 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,450 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:58,452 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:54:58,452 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:54:58,619 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:58,621 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,629 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:58,630 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,630 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:58,741 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:58,742 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:58,752 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:58,867 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:58,868 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,875 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:58,877 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:58,877 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:58,992 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:58,993 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,000 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,002 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:59,112 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:59,113 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,120 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,122 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,122 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:59,235 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:59,236 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,245 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,246 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,246 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:59,361 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:54:59,362 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,370 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,371 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,371 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:54:59,486 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:54:59,491 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,504 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,506 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,506 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:54:59,515 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:54:59,516 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,518 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:54:59,519 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:54:59,519 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:54:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 38 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:54:59,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:54:59,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 37] total 70 [2020-12-23 16:54:59,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68837557] [2020-12-23 16:54:59,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-12-23 16:54:59,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:54:59,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-12-23 16:54:59,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=4638, Unknown=0, NotChecked=0, Total=4830 [2020-12-23 16:54:59,571 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand 70 states. [2020-12-23 16:55:05,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:55:05,529 INFO L93 Difference]: Finished difference Result 176 states and 177 transitions. [2020-12-23 16:55:05,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-23 16:55:05,530 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 107 [2020-12-23 16:55:05,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:55:05,531 INFO L225 Difference]: With dead ends: 176 [2020-12-23 16:55:05,531 INFO L226 Difference]: Without dead ends: 115 [2020-12-23 16:55:05,533 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1575 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=459, Invalid=8661, Unknown=0, NotChecked=0, Total=9120 [2020-12-23 16:55:05,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-23 16:55:05,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112. [2020-12-23 16:55:05,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-12-23 16:55:05,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2020-12-23 16:55:05,535 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2020-12-23 16:55:05,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:55:05,536 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2020-12-23 16:55:05,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-12-23 16:55:05,536 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2020-12-23 16:55:05,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-23 16:55:05,536 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:55:05,536 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:55:05,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-23 16:55:05,740 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:55:05,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:55:05,741 INFO L82 PathProgramCache]: Analyzing trace with hash -1213254494, now seen corresponding path program 16 times [2020-12-23 16:55:05,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:55:05,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951539775] [2020-12-23 16:55:05,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:55:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:55:06,559 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 120 proven. 360 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:06,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951539775] [2020-12-23 16:55:06,560 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176690378] [2020-12-23 16:55:06,560 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:07,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:55:07,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:55:07,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 113 conjunts are in the unsatisfiable core [2020-12-23 16:55:07,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:55:08,052 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 153 proven. 327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:08,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:55:08,053 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 41 [2020-12-23 16:55:08,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388645623] [2020-12-23 16:55:08,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-12-23 16:55:08,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:55:08,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-12-23 16:55:08,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=1498, Unknown=0, NotChecked=0, Total=1722 [2020-12-23 16:55:08,054 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand 42 states. [2020-12-23 16:55:09,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:55:09,935 INFO L93 Difference]: Finished difference Result 120 states and 121 transitions. [2020-12-23 16:55:09,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-23 16:55:09,936 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 111 [2020-12-23 16:55:09,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:55:09,936 INFO L225 Difference]: With dead ends: 120 [2020-12-23 16:55:09,937 INFO L226 Difference]: Without dead ends: 120 [2020-12-23 16:55:09,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=670, Invalid=2522, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:55:09,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-23 16:55:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 118. [2020-12-23 16:55:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-23 16:55:09,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 119 transitions. [2020-12-23 16:55:09,948 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 119 transitions. Word has length 111 [2020-12-23 16:55:09,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:55:09,948 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 119 transitions. [2020-12-23 16:55:09,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-12-23 16:55:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 119 transitions. [2020-12-23 16:55:09,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-23 16:55:09,949 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:55:09,949 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:55:10,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:10,150 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:55:10,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:55:10,151 INFO L82 PathProgramCache]: Analyzing trace with hash 547086304, now seen corresponding path program 17 times [2020-12-23 16:55:10,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:55:10,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424667660] [2020-12-23 16:55:10,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:55:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:55:12,747 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 42 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:12,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424667660] [2020-12-23 16:55:12,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876787630] [2020-12-23 16:55:12,747 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:22,631 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-12-23 16:55:22,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:55:22,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 223 conjunts are in the unsatisfiable core [2020-12-23 16:55:22,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:55:22,663 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:55:22,664 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:22,675 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:22,675 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:22,675 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:14 [2020-12-23 16:55:23,931 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:55:23,932 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:23,947 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:23,948 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:23,948 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:27 [2020-12-23 16:55:24,664 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:24,665 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:24,686 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:24,689 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:24,689 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:25,032 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:25,033 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:25,055 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:25,057 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:25,057 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:25,400 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:25,401 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:25,424 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:25,426 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:25,426 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:25,779 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:25,780 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:25,799 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:25,801 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:25,801 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:26,144 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:26,146 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:26,169 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:26,171 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:26,171 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:26,518 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:26,520 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:26,543 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:26,545 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:26,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:26,900 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:26,901 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:26,925 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:26,927 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:26,927 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:27,294 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:55:27,295 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:27,318 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:27,320 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:27,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:32 [2020-12-23 16:55:27,667 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:27,668 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:27,690 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:27,693 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:27,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:43, output treesize:26 [2020-12-23 16:55:28,013 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:28,015 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:28,032 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:28,034 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:28,034 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:22 [2020-12-23 16:55:28,345 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-23 16:55:28,347 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:28,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2020-12-23 16:55:28,348 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:28,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:28,360 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:28,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:3 [2020-12-23 16:55:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 542 backedges. 42 proven. 500 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:28,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:55:28,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 41] total 88 [2020-12-23 16:55:28,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538316046] [2020-12-23 16:55:28,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-12-23 16:55:28,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:55:28,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-12-23 16:55:28,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=252, Invalid=7404, Unknown=0, NotChecked=0, Total=7656 [2020-12-23 16:55:28,461 INFO L87 Difference]: Start difference. First operand 118 states and 119 transitions. Second operand 88 states. [2020-12-23 16:55:31,008 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-12-23 16:55:31,312 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2020-12-23 16:55:31,711 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2020-12-23 16:55:31,973 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:32,311 WARN L197 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2020-12-23 16:55:32,707 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:33,024 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 16:55:33,404 WARN L197 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:33,728 WARN L197 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 16:55:34,106 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:34,427 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-12-23 16:55:34,819 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:35,160 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 16:55:35,577 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:35,902 WARN L197 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 16:55:36,291 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:36,616 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2020-12-23 16:55:37,009 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-23 16:55:37,314 WARN L197 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-12-23 16:55:37,668 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-12-23 16:55:37,942 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-23 16:55:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:55:38,731 INFO L93 Difference]: Finished difference Result 192 states and 193 transitions. [2020-12-23 16:55:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-23 16:55:38,732 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 117 [2020-12-23 16:55:38,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:55:38,733 INFO L225 Difference]: With dead ends: 192 [2020-12-23 16:55:38,733 INFO L226 Difference]: Without dead ends: 125 [2020-12-23 16:55:38,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3059 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=682, Invalid=12658, Unknown=0, NotChecked=0, Total=13340 [2020-12-23 16:55:38,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-12-23 16:55:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 122. [2020-12-23 16:55:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-23 16:55:38,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 123 transitions. [2020-12-23 16:55:38,739 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 123 transitions. Word has length 117 [2020-12-23 16:55:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:55:38,739 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 123 transitions. [2020-12-23 16:55:38,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-12-23 16:55:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 123 transitions. [2020-12-23 16:55:38,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-12-23 16:55:38,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:55:38,740 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:55:38,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-23 16:55:38,948 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:55:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:55:38,949 INFO L82 PathProgramCache]: Analyzing trace with hash 388224227, now seen corresponding path program 18 times [2020-12-23 16:55:38,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:55:38,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182489163] [2020-12-23 16:55:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:55:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:55:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 153 proven. 430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:39,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182489163] [2020-12-23 16:55:39,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960102524] [2020-12-23 16:55:39,837 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:43,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-12-23 16:55:43,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:55:43,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 99 conjunts are in the unsatisfiable core [2020-12-23 16:55:43,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:55:43,194 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:43,194 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:55:43,196 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:43,221 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:55:43,223 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:43,223 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:55:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 583 backedges. 190 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:44,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:55:44,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 56 [2020-12-23 16:55:44,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840409742] [2020-12-23 16:55:44,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-12-23 16:55:44,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:55:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-12-23 16:55:44,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=2844, Unknown=0, NotChecked=0, Total=3192 [2020-12-23 16:55:44,935 INFO L87 Difference]: Start difference. First operand 122 states and 123 transitions. Second operand 57 states. [2020-12-23 16:55:49,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:55:49,020 INFO L93 Difference]: Finished difference Result 130 states and 131 transitions. [2020-12-23 16:55:49,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-23 16:55:49,021 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 121 [2020-12-23 16:55:49,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:55:49,021 INFO L225 Difference]: With dead ends: 130 [2020-12-23 16:55:49,022 INFO L226 Difference]: Without dead ends: 130 [2020-12-23 16:55:49,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1324, Invalid=5482, Unknown=0, NotChecked=0, Total=6806 [2020-12-23 16:55:49,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-23 16:55:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 128. [2020-12-23 16:55:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-23 16:55:49,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2020-12-23 16:55:49,026 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 121 [2020-12-23 16:55:49,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:55:49,026 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2020-12-23 16:55:49,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-12-23 16:55:49,026 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2020-12-23 16:55:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-12-23 16:55:49,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:55:49,027 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:55:49,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:49,233 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:55:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:55:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1821215585, now seen corresponding path program 19 times [2020-12-23 16:55:49,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:55:49,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617357983] [2020-12-23 16:55:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:55:49,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:55:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 46 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:52,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617357983] [2020-12-23 16:55:52,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967680374] [2020-12-23 16:55:52,302 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:55:52,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:55:52,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 198 conjunts are in the unsatisfiable core [2020-12-23 16:55:52,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:55:52,510 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:55:52,512 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:52,518 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:52,519 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:52,519 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:55:53,916 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:55:53,917 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:53,928 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:53,929 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:53,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:55:54,483 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-23 16:55:54,484 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,498 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:54,500 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:55:54,500 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:55:54,682 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:54,683 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,691 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:54,692 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,693 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:54,821 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:54,822 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,831 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:54,833 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,833 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:54,963 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:54,964 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:54,974 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:54,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,106 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,110 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,117 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,119 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,251 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,253 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,262 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,263 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,263 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,395 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,396 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,406 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,407 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,541 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,542 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,550 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,552 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,552 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,687 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,691 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,702 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,704 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,704 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,855 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:55:55,856 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,863 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:55,864 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:55,864 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:55:55,995 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:55:55,996 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:56,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:56,006 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:56,006 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:55:56,014 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:55:56,015 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:55:56,017 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:55:56,018 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:55:56,018 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:55:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 651 backedges. 46 proven. 605 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:55:56,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:55:56,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 43] total 82 [2020-12-23 16:55:56,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412086511] [2020-12-23 16:55:56,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-12-23 16:55:56,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:55:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-12-23 16:55:56,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=6416, Unknown=0, NotChecked=0, Total=6642 [2020-12-23 16:55:56,067 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand 82 states. [2020-12-23 16:56:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:04,478 INFO L93 Difference]: Finished difference Result 208 states and 209 transitions. [2020-12-23 16:56:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-12-23 16:56:04,479 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 127 [2020-12-23 16:56:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:04,480 INFO L225 Difference]: With dead ends: 208 [2020-12-23 16:56:04,480 INFO L226 Difference]: Without dead ends: 135 [2020-12-23 16:56:04,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2199 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=533, Invalid=11899, Unknown=0, NotChecked=0, Total=12432 [2020-12-23 16:56:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-23 16:56:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 132. [2020-12-23 16:56:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-23 16:56:04,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2020-12-23 16:56:04,485 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 127 [2020-12-23 16:56:04,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:04,485 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2020-12-23 16:56:04,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-12-23 16:56:04,486 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2020-12-23 16:56:04,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-12-23 16:56:04,486 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:04,486 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:04,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-23 16:56:04,693 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:56:04,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:04,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1005234012, now seen corresponding path program 20 times [2020-12-23 16:56:04,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:04,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585546062] [2020-12-23 16:56:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:04,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:05,757 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 190 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:05,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585546062] [2020-12-23 16:56:05,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11207687] [2020-12-23 16:56:05,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:05,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-23 16:56:05,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:05,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 128 conjunts are in the unsatisfiable core [2020-12-23 16:56:05,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:05,966 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:05,966 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:56:05,968 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:05,999 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:56:06,001 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:06,001 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:56:08,077 INFO L134 CoverageAnalysis]: Checked inductivity of 696 backedges. 231 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:08,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:08,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 60 [2020-12-23 16:56:08,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224464347] [2020-12-23 16:56:08,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-12-23 16:56:08,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:08,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-12-23 16:56:08,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=3323, Unknown=0, NotChecked=0, Total=3660 [2020-12-23 16:56:08,079 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand 61 states. [2020-12-23 16:56:11,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:11,487 INFO L93 Difference]: Finished difference Result 140 states and 141 transitions. [2020-12-23 16:56:11,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-12-23 16:56:11,491 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 131 [2020-12-23 16:56:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:11,492 INFO L225 Difference]: With dead ends: 140 [2020-12-23 16:56:11,493 INFO L226 Difference]: Without dead ends: 140 [2020-12-23 16:56:11,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1512 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=909, Invalid=5097, Unknown=0, NotChecked=0, Total=6006 [2020-12-23 16:56:11,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-23 16:56:11,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 138. [2020-12-23 16:56:11,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-12-23 16:56:11,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 139 transitions. [2020-12-23 16:56:11,496 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 139 transitions. Word has length 131 [2020-12-23 16:56:11,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:11,497 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 139 transitions. [2020-12-23 16:56:11,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-12-23 16:56:11,497 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 139 transitions. [2020-12-23 16:56:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-12-23 16:56:11,498 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:11,498 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:11,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:11,713 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:56:11,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:11,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1834780062, now seen corresponding path program 21 times [2020-12-23 16:56:11,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:11,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081980473] [2020-12-23 16:56:11,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:15,397 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 50 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:15,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081980473] [2020-12-23 16:56:15,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585013828] [2020-12-23 16:56:15,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:19,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2020-12-23 16:56:19,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:19,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 213 conjunts are in the unsatisfiable core [2020-12-23 16:56:19,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:19,313 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:56:19,314 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:19,319 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:19,320 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:19,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:8 [2020-12-23 16:56:20,901 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2020-12-23 16:56:20,903 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:20,914 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:20,915 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:56:20,915 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2020-12-23 16:56:21,509 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2020-12-23 16:56:21,511 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:21,525 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:21,527 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-23 16:56:21,527 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:32, output treesize:21 [2020-12-23 16:56:21,720 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:21,721 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:21,730 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:21,732 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:21,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:21,872 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:21,873 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:21,882 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:21,883 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:21,884 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,027 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,028 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,036 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,038 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,038 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,182 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,184 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,190 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,192 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,192 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,347 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,348 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,357 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,358 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,359 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,502 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,503 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,512 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,514 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,514 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,662 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,664 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,671 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,673 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,673 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,827 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,828 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,838 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,839 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,839 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:22,986 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:22,987 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,996 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:22,998 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:22,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:23,146 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2020-12-23 16:56:23,148 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,155 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:23,157 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,157 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:25, output treesize:14 [2020-12-23 16:56:23,299 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-12-23 16:56:23,304 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,312 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:23,313 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,314 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:23, output treesize:7 [2020-12-23 16:56:23,322 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-12-23 16:56:23,323 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,325 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:23,326 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:23,326 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-12-23 16:56:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 50 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:23,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:23,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 46] total 88 [2020-12-23 16:56:23,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582786836] [2020-12-23 16:56:23,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 88 states [2020-12-23 16:56:23,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:23,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2020-12-23 16:56:23,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=7413, Unknown=0, NotChecked=0, Total=7656 [2020-12-23 16:56:23,385 INFO L87 Difference]: Start difference. First operand 138 states and 139 transitions. Second operand 88 states. [2020-12-23 16:56:33,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:33,065 INFO L93 Difference]: Finished difference Result 224 states and 225 transitions. [2020-12-23 16:56:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-12-23 16:56:33,066 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 137 [2020-12-23 16:56:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:33,067 INFO L225 Difference]: With dead ends: 224 [2020-12-23 16:56:33,067 INFO L226 Difference]: Without dead ends: 145 [2020-12-23 16:56:33,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 107 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=570, Invalid=13710, Unknown=0, NotChecked=0, Total=14280 [2020-12-23 16:56:33,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-23 16:56:33,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 142. [2020-12-23 16:56:33,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-23 16:56:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 143 transitions. [2020-12-23 16:56:33,072 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 143 transitions. Word has length 137 [2020-12-23 16:56:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:33,072 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 143 transitions. [2020-12-23 16:56:33,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 88 states. [2020-12-23 16:56:33,072 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 143 transitions. [2020-12-23 16:56:33,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-12-23 16:56:33,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:33,073 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:33,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2020-12-23 16:56:33,281 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:56:33,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:33,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2006331419, now seen corresponding path program 22 times [2020-12-23 16:56:33,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:33,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809842396] [2020-12-23 16:56:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 231 proven. 588 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:34,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809842396] [2020-12-23 16:56:34,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880074213] [2020-12-23 16:56:34,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:36,058 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-23 16:56:36,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:36,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 142 conjunts are in the unsatisfiable core [2020-12-23 16:56:36,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:36,094 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:36,095 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2020-12-23 16:56:36,096 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,128 INFO L625 ElimStorePlain]: treesize reduction 10, result has 67.7 percent of original size [2020-12-23 16:56:36,132 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:36,132 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:16, output treesize:12 [2020-12-23 16:56:37,400 INFO L134 CoverageAnalysis]: Checked inductivity of 819 backedges. 276 proven. 543 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:37,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:56:37,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 31] total 48 [2020-12-23 16:56:37,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457169457] [2020-12-23 16:56:37,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-12-23 16:56:37,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:56:37,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-12-23 16:56:37,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=2162, Unknown=0, NotChecked=0, Total=2352 [2020-12-23 16:56:37,402 INFO L87 Difference]: Start difference. First operand 142 states and 143 transitions. Second operand 49 states. [2020-12-23 16:56:40,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 16:56:40,269 INFO L93 Difference]: Finished difference Result 150 states and 151 transitions. [2020-12-23 16:56:40,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-23 16:56:40,270 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 141 [2020-12-23 16:56:40,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 16:56:40,277 INFO L225 Difference]: With dead ends: 150 [2020-12-23 16:56:40,277 INFO L226 Difference]: Without dead ends: 150 [2020-12-23 16:56:40,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 919 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=579, Invalid=3843, Unknown=0, NotChecked=0, Total=4422 [2020-12-23 16:56:40,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-12-23 16:56:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2020-12-23 16:56:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-12-23 16:56:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2020-12-23 16:56:40,280 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 141 [2020-12-23 16:56:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 16:56:40,281 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2020-12-23 16:56:40,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-12-23 16:56:40,281 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2020-12-23 16:56:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-12-23 16:56:40,282 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 16:56:40,282 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 16:56:40,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:40,497 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr7REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION, ULTIMATE.startErr4REQUIRES_VIOLATION, ULTIMATE.startErr9REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION, ULTIMATE.startErr8REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION]=== [2020-12-23 16:56:40,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 16:56:40,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1006091491, now seen corresponding path program 23 times [2020-12-23 16:56:40,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 16:56:40,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900117167] [2020-12-23 16:56:40,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 16:56:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 16:56:44,728 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 54 proven. 845 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:56:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900117167] [2020-12-23 16:56:44,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561851986] [2020-12-23 16:56:44,729 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-23 16:56:54,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2020-12-23 16:56:54,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-23 16:56:54,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 227 conjunts are in the unsatisfiable core [2020-12-23 16:56:54,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-23 16:56:54,091 INFO L443 ElimStorePlain]: Different costs {0=[|v_#length_29|], 1=[|v_#valid_39|]} [2020-12-23 16:56:54,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-23 16:56:54,096 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2020-12-23 16:56:54,097 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:54,111 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:54,118 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-12-23 16:56:54,120 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:54,132 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:54,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:54,134 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:24, output treesize:16 [2020-12-23 16:56:56,120 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2020-12-23 16:56:56,121 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:56,133 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:56,134 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:56,134 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:29, output treesize:25 [2020-12-23 16:56:56,772 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:56,774 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:56,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:56,790 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:56,790 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:57,133 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:57,135 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,150 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:57,152 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,152 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:57,500 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:57,502 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,517 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:57,519 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,519 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:57,877 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:57,878 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,892 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:57,894 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:57,894 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:58,276 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:58,277 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:58,291 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:58,293 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:58,293 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:58,664 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:58,666 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:58,679 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:58,681 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:58,682 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:59,059 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:59,060 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,075 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:59,077 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,077 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:59,462 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:59,464 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,479 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:59,480 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,481 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:56:59,891 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:56:59,893 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,905 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:56:59,907 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:56:59,907 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:57:00,322 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:57:00,324 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:00,338 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:00,340 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:00,340 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:57:00,758 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:57:00,760 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:00,773 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:00,775 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:00,776 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:57:01,200 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:57:01,201 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:01,215 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:01,217 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:01,217 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:24 [2020-12-23 16:57:01,651 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-23 16:57:01,653 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-23 16:57:01,668 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:01,670 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:01,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:35, output treesize:20 [2020-12-23 16:57:02,113 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:02,113 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2020-12-23 16:57:02,115 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-12-23 16:57:02,128 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-23 16:57:02,129 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-23 16:57:02,129 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:19 [2020-12-23 16:57:02,848 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 276 proven. 623 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 16:57:02,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-23 16:57:02,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 48] total 109 [2020-12-23 16:57:02,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461347390] [2020-12-23 16:57:02,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-12-23 16:57:02,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 16:57:02,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-12-23 16:57:02,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=11438, Unknown=0, NotChecked=0, Total=11772 [2020-12-23 16:57:02,850 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand 109 states. [2020-12-23 16:57:10,351 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-23 16:57:10,908 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2020-12-23 16:57:12,918 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-12-23 16:57:22,220 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44